Sock



FIG. 1 is a top plan view of a sock of the present invention showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken lines showing a human foot are for the purpose of depicting environment. All other broken lines depict stitching and portions of the sock and form no part of the claim. 

CLAIM The ornamental design for a sock, as shown and described. 